Wednesday, March 18, 2009

t-High: APRV initial settings

  • The t-High setting allows for sustained lung recruitment, improving gas exchange by increasing alveolar surface area.
  • To maintain maximal recruitment the t-High should be set at ~ 85% of the total cycle time.
Notice the above image with an appropriate set prolonged t-High, thus allowing for the majority of the breath phase to be devoted to alveolar recruitment. 

Time Setting
  • The recommended initial t-High setting in adults is 4-6 seconds.
  • Pediatrics from 3-5 seconds.
  • Neonates 2-3 seconds.